#include using namespace std; using ll = long long; using ld = long double; using pll = pair; using vl = vector; template using vec = vector; template using vv = vec>; template using vvv = vv>; template using minpq = priority_queue, greater>; #define rep(i, r) for(ll i = 0; i < (r); i++) #define reps(i, l, r) for(ll i = (l); i < (r); i++) #define rrep(i, l, r) for(ll i = (r) - 1; i >= (l); i--) #define all(a) (a).begin(), (a).end() #define sz(a) (ll)(a).size() template bool chmax(T &a, const T& b) { return a < b ? a = b, true : false; } template bool chmin(T &a, const T& b) { return a > b ? a = b, true : false; } ll modmul(ll a, ll b, ll mod) { ll ret = a * b - mod * ll(1.L / mod * a * b); return ret + mod * (ret < 0) - mod * (ret >= mod); } ll modpow(ll a, ll b, ll mod) { ll ans = 1; for (; b; a = modmul(a, a, mod), b /= 2) if (b & 1) ans = modmul(ans, a, mod); return ans; } using ull = unsigned long long; int solve() { ll n, m, t; cin >> n >> m >> t; vl a(m); rep(i, m) cin >> a[i]; vl remain(n, 0); rep(i, m) remain[a[i]-1]++; minpq q; rep(i, n) { if(remain[i] > 0){ q.emplace(1, i); remain[i]--; } else q.emplace(t, i); } rep(_, m) { auto [tick, i] = q.top(); q.pop(); if(remain[i] > 0){ q.emplace(tick + 1, i); remain[i]--; } else q.emplace(tick + t, i); // cerr << tick << " " << i << endl; if(_ == m-1) cout << tick << endl; } return 0; } int main() { ll T = 1; cout << fixed << setprecision(16); // cin >> T; while (T--) solve(); }